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Energy conservation is a crucial criterion in any industry. Generally, the process industry employs induction motors for its robustness and reliability. Engaging star-delta scheme based energy conservation for induction motors is a conventional practice in process industries. Although the star delta scheme provides economic benefits, it affects the outgrowth of the industries during electrical perturbations...
PTC is a kind of finite control set model predictive control (FCS-MPC) technique gaining its attention in high-performance electric drive applications due to its intuitive concepts and simple structure. Further, additional control parameters (switching frequency, common mode voltage etc.) can be directly included into the objective-function of the control algorithm. However, suitable weighting factors...
A model predictive current control (MPCC) of shunt active power filter (SAPF) requires tracking of distorted reference current based on the discrete mathematical model of the system. But the approximations considered in the development of mathematical model for the nonlinear system and also the uncertainty in the parameter values will deteriorate the performance of control algorithm. To enhance the...
Insulated gate bipolar transistors (IGBT) have evolved significantly and become exceedingly fast. Today, their typical switching speeds are of the order of 100ns. The resulting dv/dt is considerably large and when employed in a variable speed motor drive inverter, ringing over-voltages occur at the motor terminals even with cable as short as 1 meter in length. In any such power converter system, protection...
In this paper, a model based predictive current control (MPCC) with a modified synchronous detection technique (SDT) is developed for a 3L-NPC multi-functional inverter based solar photovoltaic (SPV) system. This 3L-NPC multi-functional grid tied inverter (MFGTI) perform maximum power point tracking, harmonic compensation, load balancing and power factor control. The proposed SDT consists of two-stages,...
Designing various learning strategies has been gaining a lot of scientific interest during the recent progress of deep learning methodologies. Curriculum learning is a learning strategy aimed at training the neural network model by presenting the samples in a specific meaningful order rather than randomly sampling the training examples from the data distribution. In this work, we have explored starting...
This paper presents a comparison of throughputand end-to-end latency of synchronous and asynchronous heterogeneousNoC under uniform and exponential traffic conditionsusing different parameters. The parameters we have chosen areno. of cores, load (traffic) and no. of VCs of a router. Further, sinkbandwidth analysis of synchronous and asynchronous NoC underuniform traffic was studied and compared. The...
Finite control set model predictive control (FCS-MPC) is one of the promising alternatives for classical controllers (PID, hysteresis, etc…) in electric drive applications. The inherent discrete nature of FCS-MPC is suitable for a converter fed direct torque control (DTC) of induction motor drive. This paper presents a comparative study between conventional DTC and finite control set model predictive...
Designing data channels for the DDR4 memory is a challenging due to high data rates of 3.2GB/s per data signal at a low-voltage of 1.2V The coupling of simultaneous switching noise (SSN) in data signals in DDR4 memory modules is a critical signal and power integrity (SI/PI) problem. It is important to catch SI and PI problems at an early stage in design that requires fast and accurate power-aware...
We studied the magnetoresistance of symmetric cobalt nanorings with nanowires attached at diametrically opposite positions. Deterministic switching, induced by an external magnetic field between the stable magnetization states, is demonstrated using histograms of the resistance changes as a function of an external magnetic field. The changes of the switching fields were studied as the lateral dimensions...
Usually electric tugboats are equipped with diesel engine based electric generator for power production, battery for supplying power to auxiliary loads and electric motors for propulsion. This paper proposes control strategies for diesel engine and electric generators used in electric tugboat to improve energy efficiency of the system. Doubly fed induction machine (DFIM), asynchronous in nature, is...
In Wireless Local Area Networks (WLANs), providing seamless mobility and balancing load among Access Points (APs) are challenging issues due to simple signal strength based association and hand-off mechanisms employed at wireless clients. Extensions to Software Defined Networking (SDN) framework for wireless networks could help to address theses issues in an efficient and cost-effective manner with...
In this paper, we investigate the behavior of 1200V Punch-Through, Trench gate, Field stop (FS) IGBT at various temperatures for different trench widths and depths. MOS-controlled devices with trench gates are the most desirable as their reduced VCE(sat) enables increased conduction current density in high power applications. The paper describes the simulation results of the trench gate IGBT. The...
Retaining students poses a huge challenge in the field of engineering, as many students become discouraged while working on their degrees and switch majors or leave school entirely. Our key observation is that it is extremely important to introduce students to real-world problems early on in their studies. Too often, students become confused and dissatisfied by abstract theories in their early engineering...
The present paper discusses the design and development of low loss dual mode PIN diode phase shifter in MIC configuration for medium power scanned array radar. The paper discuses the design topologies to achieve the low loss in the phase shift bits and a hybrid innovative 3 diode configuration. The Phase shifter is designed to achieve 1.7 dB insertion losses in six-bit configuration for 12% of bandwidth...
This paper presents a new image interpolation technique for enhancement of spatial resolution of images. The proposed algorithm uses the switching of existing Soft-decision Adaptive Interpolation (SAI) algorithm and Single Pass Interpolation Algorithm (SPIA) methods. We learn the error pattern in the interpolation process of SAI method and SPIA Method after interpolating downsampled version of LR...
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